<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>权限管理</el-breadcrumb-item>
        <el-breadcrumb-item>角色列表</el-breadcrumb-item>
       </el-breadcrumb>

        <el-card>
            <!-- 添加角色按钮区 -->
            <el-row>
                <el-col>
                    <el-button type="primary">添加角色</el-button>
                </el-col>
            </el-row>
            <!-- 角色列表区 -->
            <el-table :data="rolelist" border stripe>
                <!-- 展开列 -->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <!-- 渲染一级标签 -->
                        <el-row :class="['bdbottom',i1===0 ? 'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                            <el-col :span="5">
                                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!-- 渲染二三级标签 -->
                            <el-col :span="19">
                                <el-row :class="[i2===0?'':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">
                                        <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                        <!-- <pre>
                            {{scope.row}}
                        </pre> -->
                    </template>
                </el-table-column>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px" >
                    <template slot-scope="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
                        <el-button size="mini" type="success" icon="el-icon-delete">删除</el-button>
                        <el-button size="mini" type="info" icon="el-icon-star-off" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template> 
                </el-table-column>
            </el-table>
        </el-card>
                <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%">
                    <!-- 树形控件 -->
                    <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" 
                    default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
                    <span slot="footer" class="dialog-footer">
                        <el-button @click="setRightDialogVisible = false">取 消</el-button>
                        <el-button type="primary" @click="allotRights">确 定</el-button>
                    </span>
                </el-dialog>
    </div>

</template>


<script>
export default {
    data(){
        return {
            rolelist:[],
            setRightDialogVisible:false,
            rightslist:[],
            // 树形控件属性绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            // 默认选中的节点id值数组
            defKeys:[],
            roleId:'',
        }
    },
    created(){
        this.getRoleList()
    },
    methods:{
      async  getRoleList(){
           const {data:res}  =  await this.$http.get('roles')
           if(res.meta.status!==200) return this.$message.error('请求错误')
           this.rolelist = res.data
        },
   async removeRightById(role,rightid){
      const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!=='confirm') return this.$message.info('已取消')
           const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightid}`)
           if(res.meta.status!==200) return this.$message.error('删除失败')
        //    this.getRoleList()
        role.children=res.data
    },
   async showSetRightDialog(role){
       this.roleId = role.id
       const {data:res} = await this.$http.get('rights/tree')
        if(res.meta.status!==200) return this.$message.error('获取信息失败')
        this.rightslist = res.data
        console.log(this.rightslist)
        // 递归获取三级节点的id
        this.defKeys=[]
        this.getLeafKeys(role,this.defKeys)
        this.setRightDialogVisible=true
        
    },
    // 通过递归的方式 拿到三级节点 放到数据defkeys中
    getLeafKeys(node,arr){
        if(!node.children){
            return arr.push(node.id)
        }
        node.children.forEach(item => 
            this.getLeafKeys(item,arr)
        )
    },
   async allotRights(){
        const keys = [
            ...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getHalfCheckedKeys()
        ]
        const idStr = keys.join(',')
        const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
         if(res.meta.status!==200) return this.$message.error('失败')
         this.$message.success('分配成功')
         this.getRoleList()
         this.setRightDialogVisible = false
    }
       


}}

</script>

<style scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>